45431380 has 12 divisors (see below), whose sum is σ = 95405940. Its totient is φ = 18172544.

The previous prime is 45431377. The next prime is 45431381. The reversal of 45431380 is 8313454.

45431380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14227984 + 31203396 = 3772^2 + 5586^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45431381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135765 + ... + 1135804.

It is an arithmetic number, because the mean of its divisors is an integer number (7950495).

Almost surely, 2^45431380 is an apocalyptic number.

It is an amenable number.

45431380 is an abundant number, since it is smaller than the sum of its proper divisors (49974560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45431380 is a wasteful number, since it uses less digits than its factorization.

45431380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271578 (or 2271576 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 45431380 is about 6740.2804095972. The cubic root of 45431380 is about 356.8222901778.

The spelling of 45431380 in words is "forty-five million, four hundred thirty-one thousand, three hundred eighty".